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Arsenic and chromium removal from water using biochars derived from rice husk, organic solid wastes and sewage sludge

Agrafioti Evanthia, Kalderis Dimitrios, Diamantopoulos Evaggelos

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URIhttp://purl.tuc.gr/dl/dias/25BCDFB6-42DF-4327-B96D-727FD82FAC60-
Identifierhttps://doi.org/10.1016/j.jenvman.2013.12.007-
Identifierhttp://www.sciencedirect.com/science/article/pii/S0301479713007470?via%3Dihub-
Languageen-
Extent6 pagesen
TitleArsenic and chromium removal from water using biochars derived from rice husk, organic solid wastes and sewage sludgeen
CreatorAgrafioti Evanthiaen
CreatorΑγραφιωτη Ευανθιαel
CreatorKalderis Dimitriosen
CreatorΚαλδερης Δημητριοςel
CreatorDiamantopoulos Evaggelosen
CreatorΔιαμαντοπουλος Ευαγγελοςel
PublisherElsevieren
Content SummaryBiochars derived from rice husk, the organic fraction of municipal solid wastes and sewage sludge, as well as a sandy loam soil, were used as adsorbents for As(V), Cr(III) and Cr(VI) removal from aqueous solutions. The kinetic study showed that sorption can be well described by the pseudo-second order kinetic model, while simulation of sorption isotherms gave better fit for the Freundlich model. The materials examined removed more than 95% of the initial Cr(III). However, removal rates for As(V) and Cr(VI) anions were significantly lower. Biochar derived from sewage sludge was efficient in removing 89% of Cr(VI) and 53% of As(V). Its ash high Fe2O3 content may have enhanced metal adsorption via precipitation. Soil was the most effective material for the removal of As(V), yet it could not strongly retain metal anions compared to biochars, as a significant amount of the adsorbed metal was released during desorption experiments.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2015-11-19-
Date of Publication2014-
SubjectEnvironmental managementen
SubjectDesorptionen
SubjectAdsorptionen
Bibliographic CitationE. Agrafiotia, D. Kalderisb and E. Diamadopoulos, "Arsenic and chromium removal from water using biochars derived from rice husk, organic solid wastes and sewage sludge," J. Environ. Manage., vol. 133, pp. 309-314, Jan. 2014. doi: 10.1016/j.jenvman.2013.12.007 en

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